Rotary compressor

Abstract

In a rotary compressor, a second muffler (17A) has a cup shape, and is symmetrically arranged in a direction different by 90 degrees from positions of first muffler discharge ports (16a, 16b) with a crankshaft at the center. The second muffler has half circular arc cut regions (n1, n2) from a second muffler crankshaft hole (17h) toward the external. In a vertical view of of the muffler (17A), muffler discharge regions (n1, n2) is the cut regions (n1, n2) extending radially outward from the crankshaft hole (17h) and symmetrically arranged, the muffler (17A) has a muffler inclined surface (17t) and a plane part on top of the muffler, and the cut regions are arranged on the plane. Thus, the second muffler is provided with the discharge port structure capable of discharging a compressed gas so as not to disturb the flow of a lubricating oil that returns to an oil storing section along an inner wall surface of a casing.

Description

technical field [0001] This invention relates to rotary compressors, and more particularly to improvements in the construction of rotary compressors. Background technique [0002] <Overall structure of rotary compressor> [0003] refer to Figure 3 ~ Figure 5 The overall structure of the rotary compressor will be described. in addition, image 3 is a longitudinal sectional view showing the overall structure of a rotary compressor, Figure 4 is along image 3 The sectional view in the direction of the arrow of the IV-IV line, Figure 5 It is a figure which schematically shows the flow of the compressed gas in a muffler. [0004] This rotary compressor has a casing 1 having a cylindrical shape with its interior sealed. The compression unit 4 is arranged on the lower end side, and the drive unit 3 for actuating the compression unit 4 is arranged above it. A discharge pipe 2 is disposed on the upper portion of the casing 1 . An oil groove portion 21 for storing lub...

AI Technical Summary

Problems solved by technology

[0016] However, as described above, since the compressed gas discharged from the second muffler discharge ports 17a, 17b is discharged toward the casing 1 (arrow G1 direction in the figure), the discharge direction of the compressed gas (G1 direction) and the return direction of the lubricating oil (O1 direction) ) collides with the inner wall of shell 1

As a result, the return of lubricating oil inside the housing 1 may be hindered

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